Ensure you are not mixing "stable" userland binaries with a "current" kernel (or vice versa). 3. Rebuild PF Control Tools
The actual engine that inspects and filters packets at the system's core. pf configuration incompatible with pf program version
Restart the PF service: service pf restart or rcctl restart pf . 4. Restore from Backup (pfSense/OPNsense) Ensure you are not mixing "stable" userland binaries
System libraries that pfctl relies on were updated to a version incompatible with the running kernel. pf configuration incompatible with pf program version
Use the to roll back to a known working configuration.